Jenna Bush Hager has love on the brain, and she is putting it to the test! The star submitted herself to a brain wave test for the Today Show.The Today host had no fear when it came to exposing her true feelings, even those concerning her husband Henry Hager and co-star Al Roker, through science.For her latest Today segment, she met with Dr. Sandra Langeslag, an associate professor in psychological sciences at the University of Missouri, St.